Ask
your own question, for FREE!
Mathematics
10 Online
x+2squarerootx-3=0. solve for x?
Still Need Help?
Join the QuestionCove community and study together with friends!
\[x+2\sqrt{x}-3=0\] \[2\sqrt{x}=3-x\] square to get \[4x=(3-x)^2\] \[4x=9-6x+x^2\] \[x^2-10x+9=0\] solve for x get \[(x-1)(x-10)=0\] \[x=1\] or \[x=10\] butyou are not done here because you have to check your answers.
ok that was way wrong \[x^2-10x+9=0\] \[(x-1)(x-9)=0\] \[x=1\] or \[x=9\] now it is right
now check because there is no guarantee they work \[1+2\sqrt{1}-3=0\] \[1+2-3=0\] that one works \[9+2\sqrt{9}-3=0\] \[9+3-3=0\] that one does not work. only solution is \[x=1\]
Can't find your answer?
Make a FREE account and ask your own questions, OR help others and earn volunteer hours!
Join our real-time social learning platform and learn together with your friends!
Join our real-time social learning platform and learn together with your friends!
Latest Questions
Subshilava:
Does anybody have a college poster board layout I have my material but I cannot f
MaxTon:
I was feeling a bit down so I turned to writing how I felt down and made something out of it.
theydontknowmelly:
What's a good healthy diet for someone who's starting to workout daily ??
janaeDehon:
Which of the following lines best summarizes the story? A. The story details an African vacation from a long time ago, in which Sage's adventures are descri
Subshilava:
I have an issue my mom bought me a 3d cat mold from tj maxx and everytime I fill
ShikuniShigana:
Alright so. I need some art ideas, or Drawing design ideas for this Character im doing, He's Kinda like based off Vita Carnis+Shefki Shin+Death Angel(From Q
gelphielvr:
hello :] I have to make a model for my biology class for either topic "evolution"
6 hours ago
0 Replies
0 Medals
2 hours ago
17 Replies
5 Medals
15 hours ago
31 Replies
9 Medals
15 hours ago
5 Replies
3 Medals
18 hours ago
17 Replies
4 Medals
14 hours ago
17 Replies
2 Medals
1 day ago
15 Replies
2 Medals